HowTo: Implement user sign up and login with AWS Cognito

login.js

async function login(email, password) {
  try {
    const cognito = new AWS.CognitoIdentityServiceProvider()
    return await cognito.adminInitiateAuth({
      AuthFlow: 'ADMIN_NO_SRP_AUTH',
      ClientId: process.env.CLIENT_ID,
      UserPoolId: process.env.USER_POOL_ID,
      AuthParameters: {
        USERNAME: email,
        PASSWORD: password
      }
    }).promise()
  } catch (err) {
    throw err
  }
}